Transmission housing



July 28, 1931. N. SKILLMAN I TRANSMISSION HOUSING Filed May 12, 1928 I NVEN TOR. Mai 5n a/ci/fmm.

A TTORNE Y.

Patented July 28, 1931 UNITED STATES YPATENT OFFICE NEWTON SKILLMAN, OFHIGHLAND PALRK, MICHIGAN, ASSIGNOR 'lO-O. & S. BEARING 00., OF DETROIT,MICHIGAN, A CORPORATION OF MICHIGAN TRANSMISSION" HQUSIN G Applicationfiled May 12, 1928.

- er member for direct contact with the shifter arm. 7

I-Ieretofore in transmission housing andshifter arm constructionconsiderable difli- V culty has been experienced in maintaining asuitable bearing joint between the shifter arm and the housing, both asto prevention of lubricant from forcing its way through the upperopening of the housing and from rattling and wearing ofthe parts.

It is the object ofthe present invention to provide an extremelycompact-,simple and inexpensive bearing member adapted to fit within thetransmission housing in a novel manner, and being provided with apreformed bushing of lubricant impregnated fibrous material adapted todirectly contact with the spherical surface of the shifter arm, and.thus serve as a washer to provide apositive seal for the top' portion ofthe hous- 1 ing,.as an anti-rattler, as a self-lubricating member and totake up end thrust of the shifter arm.

In the drawings: i Fig. 1 is an elevation, partly in section, of

f the upper portion of a transmission housing and shifter armconstruction embodying the present invention.

Fig. 2 is a section taken on line 22 of Fig. 1.

Fig. 3 is a perspective detail view of the bearing unit adapted to bepositioned within the upper end of the transmission housing.

Illustrating the present invention I have shown the same as embodied ina conventional transmission housing and shifter arm construction, but itwill beunderstood that said housing and shifter arm may varyconsiderably in design and arrangement and still embody the features ofthe invention. The transmission housing may be generally designated 1and the upper end thereof is preferably annular and cup-shaped, as at 2,at the same time providing a suitable opening 3 to permit free movementof a standard shifter arm 4.

Serial No. 277,238.

The shifter arm 4 is preferably provided with the usual spherical member5 and a coil spring 6,. suitably supported, andexerting a force upwardlyagainst the ball 5. Adapted to be positioned within the uppercylindrical but cup-shaped end of the housing 1' is a bearing memberwhich may be generally designated 7. This member is preferably of thesame shape as the upper end of the housing and isofgeneral cylin-idrica-l shape with the exception of a turned.-

in'fiangje8.

Positioned wlthin the bearing member 7 and directly supported bytheturned-in portion 8 is a preformed lubricant impregnated annular bushingmember 9. This member 9 1s preferably formed by placing airstrip oflubricant impregnated fibrous material within the outer shell of thebearing and compressing or spinning the same intos-hape wherebyt'O'pI0V1Cle a preformed, spherical surface fordirectly contacting withthe ball 5 ofthe' shifter arm. This bushing 9'may be formed: of fairlyhighly compressed lubrlca-nt. impregated: fibrous material, the pointbeing, that the bearing surface of said bushing is spherical andpreformed! in shape.

The preformed: bushing 9 is preferably held in place by means ofsu-itableindenta tions 10 formed in the surface of the shell 7, and suchindentations may be placedin', the shell either before or after theinsertion ber and an anti-rattlermember, the latter function beingparticularly desirable and being obtained'dueto. the factthat thespring. 6 will constantly forcethe sphericalv member- 5 against theresilient fibrous bushing 91,

This novel combination will materially accelerate the ease and quietnessof shifting,

wiihalso serve' as a positiveseal. in preventing any lubricant from 7being forced up around the shifter arm.

What I claim is:

1. In a transmission housing of the type :aving a shifter arm extendingthrough the upper end thereof, and a member on the lever having aspherical bearing surface, an outer cylindrical bearing sleeve having annturned upper edge positioned within the iousing, and a bushing oflubricant impregnated fibrous material, preformed to provide a sphericalbearing surface, positioned within the upper end of said bearing memherand contacting directly with said sphercal bearing surface of saidmember on the shifter arm.

2. In a transmission housing of the type having a shifter arm andextending through he upper end thereof, and a member on the lever havinga spherical bearing surface, an outer cylindrical bearing sleeve havingan inturned upperedge positioned within the housing, and an annularbushing of lubriant impregnated fibrous material, preform- "od toprovide a spherical bearing surface,

positioned Within the upper end of said bearing member and contactingdirectly with said spherical bearing surface of said member on theshifter arm.

3; In a transmission housing of the type having a shifter arm extendingthrough the upper end thereof, and a member on the lever having aspherical bearing surface, n outer cylindrical bearing sleeve having aninturned upper edge positioned within the housing, and an annularbushing of lubricant impregnated fibrous material, preformedto provide'aspherical bearing surface, positioned within the upper end of saidnearing member and contacting directly with said spherical bearingsurface of said member on the shifter arm, said bearing member beingdistorted to secure said preormed fibrous bushing in position.

4. In a transmission housing of the type s having a shifter armextending through the 7 upper end thereof, and a member on the leverhaving a spherical bearing surface, n outer cylindrical bearing sleevehaving an inturned upper edge positioned within the housing, and anannular bushing of lubricant impregnated fibrous material, preformed toprovide a spherical bearing surace, positioned within the upper end ofsaid bearing member and contacting directly with said spherical bearingsurface of said member on the shifter arm, said bearing member beingdistorted to secure said preformed fibrous bushing in position, andmeans for resiliently forcing said member with the spherical bearingsurface against said bushing.

5. In combination with a transmission arm therefor of spherical bearingand shifter the type member adjacent the upper end of the housing, anouter bearing sleeve having an inturned edge positioned within thehousing, and a bushing of lubricant impregnated fibrous materialpositioned within and adjacent the inturned edge of said bearing memberand contacting directly With one end of said spherical bearing surface,and resilient means for pressingsaid member on the lever against saidbushing.

6. In combination with a transmission housing and shifter arm thereforofthe type having a spherical member adjacent the upper end of thehousing, a preformed lubricant impregnated bearing member of iibrousmaterial positioned within the upper portion of the housing and having aspheria cal bearing surface directly engaging a portion of the upper endof the spherical member, and resilient means engaging the oppositeportion of said spherical member for forcing the same into'bearingcontact with said bearing member.

7. In a transmission housing of the type havinga shifter arm extendingthrough the upper end thereof, and a member on the lever having aspherical bearing surface, an outer cylindrical bearing sleevepositioned within the housing and having an inturned end and a bushingof lubricant impregnated fibrous material positioned in said bearingmember adjacent the inturned end, and means for resiliently forcing saidmember on the lever against said bushing, said busl said lever and beingso positioned within the bearing member and housing as to form I an endthrust member and a sealing member.

In testimony whereof I affix my signature.

NEWTON SKILLMAN.

